The best open source software to choose from (2009) ?

If you are paying, you will go for brand. That is because a brand will help you to decide, that is the capitalist world's rule.

But if you are not paying, how do you make decision ?

For me, it should be:

• The most number of contributors
  
• The most number of downloads
  
• Frequent updates

Now there is a good chance for you to figure out via the SourceForge community choice award 09.

Nevertheless, the software which I really like to try out are:

• LuckyBackup - For backup (for my own PC)
  
• RippleSearch - Search engine (to help me with research)
  
• Cyn.in - Enterprise collaboration tool (to help me manage the team and people around me)
  
• PortalSoftwareUSB - Run software in the USB drive ? Something interesting
  
• KnowledgeTreeDocumentManagement - Document centric collaboration tool.
  
• InrecoLAN FuzzyMath - Fuzzy logic ? why not.
  
• FOG - A Free Cloning Solution - Something like Norton Ghost ?
  
• GeoGebra - A math educational software.
  
• OrangeHRM - HRMS.
  
• vTiger CRM - CRM
  
• All those under games category.
  
• Kaltura - a web platform for publishing videos.
  
• winPenPek - Run software on USB

And of course, there are those so-called all-time popular like:

• Firebird - Database
  
• Symphony - PHP Framework
  
• Pentaho - Business Intelligence
• TortoiseSVN - Source code management
  
• etc

Something to look into for those people looking to cut cost on software and for developers who wanted to find out how far people have achieved ?

By the way, currently I am using one of them, which is Twiki (to manage my information). Current version is not very user friendly, but it helps me a lot and it is quite light weighted and easy transferable between machines.